As Jeff Bonwicksaid, open sourced code is nothing compared to the fact that all design discussions and decisions suddenly happen in the public (loosely paraphrased). This is a great wave to ride and I have jumped on it
when it was not really small so I have at least posted the webrev pointer for initial Netcat integration (CR 4664622) to the opensolaris-code mailing list (which is roughly the equivalent of freebsd-hackers, openbsd-tech or similar mailing lists)
to get some code review comments.

webrev
of the differences between my version of Netcat and the one which is
currently in OpenBSD.
Only the \*.[ch] files matter, of course. (This is very
easy thing to do with distributed SCM since it only requires one to reparent and
regenerate webrev against new parent workspace)

Updated
manual page
This is slightly different from the man page in the PSARC materials because it contains
new section about using nc with privileges and associated set of examples in the EXAMPLES
section. The man page in the PSARC materials will not be updated because after a case
is approved, the man page is updated only in case some architectural changes were
needed. In the case of privileges, it is only addition describing specific usage,
no architectural changes.

The conclusion for non code reviewers ? I hope it is clear the in (Open)Solaris land
we value quality and transparency. Peer reviews and architectural reviews are just
(albeit crucial) pieces which help to achieve that goal.